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In the past 24 hours, we’ve been contending with a variety of attacks that continue to change in nature and intensity. We’re working to restore access to apps built on the Twitter platform that were affected by defensive measures—there was some overcompensation on our part as we tune our system to deal with this scale of attack.

The ongoing, massively coordinated attacks on Twitter this week appear to have been geopolitical in motivation. However, we don’t feel it’s appropriate to engage in speculative discussion about these motivations. The open exchange of information can have a positive impact globally and our job is to keep Twitter services running reliably to the best of our ability.

As a reminder, no data or personal information of any kind has been compromised. Denial of Service attacks are a known quantity on the web and they are not going away any time soon. Nevertheless, we can and will improve system response to these assaults such that they don’t interfere with our normal, everyday Twittering.